//Tue 09 Feb 2010 12:27:35 PM CST 
#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <queue>
#include <sstream>
#include <algorithm>

using namespace std;

class TwoStringMasks
{
public:
	string shortestCommon(string s1, string s2)
	{
		string s11 = reverse(s1.begin(), s1.end());
		string s22 = reverse(s2.begin(), s2.end());
	}
};
